The Last Unicorn(1982)
Unicorns do not regret, for they do not understand human emotion. This is the story of one unicorn's journey to discover what has happened to the rest of her kind. On the road, she befriends an wizard cursed with ineptitude and a rough scullery maid. To save her from the wrath of a great bull demon, the wizard Schmendrick transforms her into a human girl. A tale of love, greed, adventure. . .and regret. A story that will leave you singing "i'm alive"
This is the theatrical trailer for the movie.
25th Anniversary Edition DVD